Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Smart Key System(for Start Function, Hv Model): Check For Intermittent Problems
CHECK FOR INTERMITTENT PROBLEMS NOTICE: Operation history is stored in the RAM or EEPROM of the certification ECU (smart key ECU assembly). As the cause of a malfunction stored in the RAM will be cleared when the cable is disconnected from the negative (-) auxiliary battery terminal, do not disconne ...
